Everyone in our office got flu vaccination in October.
Almost everyone in our office has missed 2-5 days for flu since mid-November.
It is very bad. These are generally healthy people.
The real, actual, genuine flu will not allow you to even raise your head off a pillow without crashing headaches and feeling like you've been beaten with chains. Had it 3 times in my 71 years. At age 14, I had to be helped out of bed to go to the bathroom. When my fever finally broke, I didn't have the energy to call my mom in for hours. Just lay on a wet pillow face down. If you have the real flu, you'll know the difference between it and less serious winter viruses.